# MAL-2026-2231: Malicious code in checkmarx.ast-results (VSCode:https://open-vsx.org)


- **Type:** Malicious package
- **Package:** `checkmarx.ast-results` (VSCode:https://open-vsx.org)
- **Published:** 26 Mar 2026

## What is MAL-2026-2231?

MAL-2026-2231 is a malicious package in checkmarx.ast-results, published on 26 Mar 2026. 

### Official description

This extension is a compromised version of the offical Checkmarx VSCode extensions
available on the Microsoft Marketplace, by the TeamPCP threat actor and related
to the Trivy campaign.

The extension hunts for sensitive credentials and developer secrets for
exfiltration. The extension also downloads a payload from an attacker
controlled server. The malicious code will also try and maintain persistence
using systemd.

## What should I do about MAL-2026-2231?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2026-2231 is a malicious package: checkmarx.ast-results (VSCode:https://open-vsx.org). Every version was published to cause harm.

Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.

Reference: https://insights.sbomify.com/MAL-2026-2231/ (Markdown: https://insights.sbomify.com/MAL-2026-2231/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-2231

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-2231/
Summaries are generated and may contain mistakes; the official description above is the record.